/Engine/Source/Editor/PropertyEditor/Public/PropertyCustomizationHelpers.h
Parse and load the given metadata string into a list of allowed classes. The metadata string is likely from something like AllowedClasses or DisallowedClasses.
namespace PropertyCustomizationHelpers { [TArray](API\Runtime\Core\Containers\TArray)< const [UClass](API\Runtime\CoreUObject\UObject\UClass) * > PropertyCustomizationHelpers::GetClassesFromMetadataString ( const [FString](API\Runtime\Core\Containers\FString) & MetadataString ) }